Tib rob



April 24, 1928.

2 Sheets-Sheet 1 (My; 5. Ha y M4 TIE ROD J. B. HAWLEY, JR

Original Filed Sept. 2', 1924 April 24. 1928. 1,667,252

J. B.- HAWLEY, JR

TIE ROD Original Filed Sept. 2. 1924 2 Sheets-Sheet 2 m i v .lll l HPatented Apr. 24, 19281 UNITED STATES PATENT OFFICE.

l JOHN B. HAWLEY, JR, F MINNEAPOLIS, .MINNESOTA.

TIE non.

Original application filed September 2, 1924, Serial No. 735,247.Divided and this application flled March 13, 1926.

vices hereinafter described and defined in.

the claims.

The present application 1s filed as a divlsi on i of my pendingapplication Serial Number 735,247 which issued as Patent #1,586,991

and which application is directedto the improved method or process ofapply ng and using tie rods in erecting concrete structures. Simplicityof construction, efficiency in use and rapidity and ease ofmanipulation,both in the application of the rods to the concrete formsandfthe removal thereof from the forms and the wall, are the mainobjects of the invention. To accomplish these objects, and moreparticularly the last noted, requires that the tie rods be capable ofapplication to the forms entirely from the exterior thereof and withoutrequiring any manual manipulation applied between the walls of theforms.

In accomplishing the above objects and other important but minor objectsI provide .a tie rod that is made up of three main sections or elements,to wit: two end sections and an intermediate section; the end sectionsbeing of greater diameter than the intermediate section. The endsections are externally threaded at their outer ends and in- 3 indicatedis of simple construction and in use has highly desirable features aswill hereinafter appear more fully after having first described theinvention as illustrated in the accompanying drawings wherein likecharacters indicate like parts throughout the several views. a a

Referring to the drawings: I Fig. 1 is a fragmentary perspective showinga portion of a concrete wall form and a ortion of a monolithic concretewall formed etweeii the same;

ternally threaded at their innerends while Serial No. 94,422.

Fig. 2 is a fragmentary vertical section taken on the line 22 of Fig.1;"

Fig. 3 is a fragmentary view in section on the same line as Fig. 2, butshowing only one side of the form, a portion of the concrete wall, andone end of the tie rod, the sections thereof being separated and someparts being shown in full;

Fig. 4 is a plan view of the tie rod in condition to be applied inworking position through the walls of the concrete form; and

Fig. 5 is a fragmentary section taken on the same line as Fig. 2 butshowing only a portion of .the concrete wallwith the form removed andwith the central or intermediate section of the tie'rod left in thewall.

Of the parts of the improvedtie rod, the numeral 6 indicates the endsections, the outer ends of which are externally threaded at 7 and theinner ends of which are internally threaded M8, and preferably alsointernally beveled at 9. Nuts 10 and preferably alsowashers 11 areapplicableto the threaded outer ends of the sections 6. The intermediate'or central section 12 is.of,cori siderably lessdiameter than the endsections 6 and the threaded ends 13 thereof are adapted to be freelyscrewed into the internally threaded ends 8 of said sections 6.

In'Fig. 3 there is shown a tool in the f0rmof an internally threadedsocket lethat is adapted to be screwed onto theouter end of eithersection 6 and is provided with an annular outer end shank 15, and thepurpose of which tool will be hereinafter noted.

The concrete form, which is of the usual or any suitable construction,is, as shown,

made up of wall-forming boards a. vertical beams b andhorizontal beamsc. The concrete Wallis indicated by the character 51' These walls are.of course, to be properly spaced by the tie bolts: thatis, by the tiebolts they will be properlyheld against separation and thetie bolts willtake the strain of the slushedin concrete.

Atpoints where the tie rods are to be applied the wall boards a andbeams 12 and c are formed with aligned holes or passages d that arepreferably only slightly greater in diameter than the outer rod sections6.

The intermediate or central rod section 12 should be somewhat shorter,say about two inches shorter. than the thickness of thewall to be formedso that in the termed wall the ends willnot project from the surface ofthe wall andhence willnot have to he cut off.

Before the rods are applied to the form, the sections 6 and 12 thereofshould be screwed together substantially as shown in Fig. 4 with thethreaded ends 13 of said section 12 seated far enough into the intery-nally threaded ends of the sections 6 to safely withstand the pressurefronrthe soft concrete wall. Then the rod with its sec- .tions assembledas shown in Fig. 4 may be freely slipped into position and passedvthrough both sides of the wall form by a asimple endwise movementthereofthrough ithesialignedholes (Z. W-hen the central secftioii 12has-beenaproperly positioned the nuts on theends ofthe outer sections 6and the incur much expense because these intermedipate -sections" 12 aresmall rods ofsimple construction-andin fact ifOllllOSll purposes areonlylargewiresand will not cost'more than -.:t-he wires usuallyjleft in.walls, and they whave the further advantage that they do rnotihave tobe'cut off at the outer surface :of'thewall. QThe recesses y may beeasily filled or plugged "with cement. Usuallythe end-sections 6 can bevery easily screwed off from the anchored central section 12 but if theyshould be somewhat stuck by the ".concrete they maybe easily loosenedand uturnedofl by the application of a socket tic-ular consideration.

wrench l4: screwed against the adj acent nuts. 'lheend sections 6, nutsand washers will, roficonrs beused over and over again, and that factisof importance because they are vthe [only parts of the complete rodwhose costof.production are a inatterof any par- The concave or in aternally beveled ends 9,serve to guide the vfitted-ends 13 of. the rodsection 12 into the threaded seats: 8.

Attention is again called to the-importance ofthe arrangement whereinthe central or intermediate rodsections 12 are of smaller diameter thanthe end sect1ons 6 and are in fact. simply straight. rods or heavy wiresectionsiwiththreaded ends. The bolt holes or passages in =jthefor1nsshould not .he of much greater 1 diameter than the rod sections 6forotherwise the applied rods would-not be properly positioned. and,moreover, there would he a leakage of concrete around. the

same; and if the central sections 12 have any parts of greater diameterthan the end sections 6 then the assembled bolt could not be inserted toposition from the outer side of the form and some sort of manual ma:nipulation would have to take place within the form or straight sidesthereof and this latter indicated operation would render the tie boltsin'ipractical for use. Moreover, since the rod sections 12 in theordinary use thereof would be left in the wall they should be of thesimplest form and least possible cost, or in other words, should he ofthe structure and arrangement described and lllUSllZttGCl 1n thedrawings.

The advantages in the use of this i1nproved tie rod or bolt may hesummed up as follows:

The elements of the bolt proper may be assembled at the hench orelsewhere, ready for placin requires no manipulationbetween'the walls ofthe forms; leaves nothing but a small rod in the wall; the main elementsof the rod are used over and over again; requires no cutting back of thecon crcte; draws the forms to proper alignment; gives positive knownstrength and no bulging of the wallsldue to slipping or stretching;holes left in walls are easily plugged or plastered up; makes awatertight Wall;

rod sections left in wall cost approximately same. as tie wires; givesendwise ad ustment;

can be removed anytime after wall is set and even weeks after wall isset; can be removed with lock nuts or spec1al wrenches; does not damageforms and allows forms to ,be used over and over again withoutdestruction; the rod sections left in the wall will afford good anchorsin cases where brackets or the like are to be secured to the surface ofthe completed concrete wall. As

.is evident, the nuts 10 on the outer ends of the rod sections ,0?constitute one form of form stop, the said stops be ng ad ustableaxially or longitudinally on the saidrod sections.

.lVhat I claim 1s: .1. A tie rod for nisertmn through prepared concreteforms, mode up of outer end threaded ends, the outer end sections haying internally threaded ends to engage the threa-dedhends of theintermediate rod, and

adjustable form stops for theouter rod sec tions.

2. A tie rodfor insertion through prepared concrete forms, made upofouter end and intermediate rod sections, the outer end sections being ofsubstantially uniform diameter throughout, the inner section havin adiameter not greater than the outer en section diameter and havingexternally threaded ends, the outer end sections having internallythreaded ends to engage the threaded ends of the intermediate rod andexternally threaded ends, and nuts applied to the externally threadedends of the outer rod sections.

3. In combination, spaced apart concrete forms, a tie rod for insertiontherein, made up of outer end and intermediate rod sections, the outerend sections being of substantially uniform diameter throughout, the

JOHN B. HAWLEY, JRQ

